The next major Ethereum update, called Fusaka, will be launched on the mainnet on December 3rd. The news was announced on Thursday (18th), during the All Core Devs Consensus, a monthly meeting that brings together the leading developers of the Ethereum ecosystem.
According to the official schedule, Fusaka will undergo testing in October on the three main Ethereum test networks: Holesky on October 1st, Sepolia on October 14th, and Hoodi on October 28th.
Among the most important changes, the update — formalized in EIP-7607 — will double the network's capacity to process blobs two weeks after its implementation. These blobs are temporary and compact data packets, introduced earlier in the Dencun update (EIP-4844), which allow storing information outside the traditional block space. The result is a reduction in costs and increased efficiency in transactions, especially in layer two solutions, such as rollups.
Another novelty is the Peer Data Availability Sampling, a system that allows validators to check the availability of a blob by analyzing only a sample of the dataset, without needing to download the entire file.
Furthermore, Fusaka will raise the gas limit per block from 30 million to 150 million units, considerably increasing the network's capacity.
The update will also introduce Verkle Trees, a new data structure that optimizes storage and allows for smaller cryptographic proofs. Finally, Fusaka will bring improvements to the Ethereum Virtual Machine (EVM), accelerating the execution of smart contracts.
